The Buckling Behavior Analysis of the Delaminated Composites by Using the Finite Element Method

有限元素法應用於具脫層複合材料的挫曲行為分析

蔡國忠(Gwo-Chung Tsai) ； 盧信維(Shing-Wei Lu)

《宜蘭技術學報》 9期工學專輯 (2002/12) Pp. 211-230

https://doi.org/10.6179/nit.bce.2002.09.29

摘要

疊層複合材料的結構會因為製造的缺陷或因外物衝擊而產生層與層之間的分離，這種層與層之間的分離稱為脫層。具脫層的複合材料結構體對於壓力的抵抗會隨著脫層的大小而降低。當壓力大到某一定值時，複合材料會產生挫曲。在此篇論文裏，三度空間的有限元素分析法用來分析此種脫層複材的挫曲行為，不同的脫層位置及形狀皆被研究以明瞭這些變化對於複材挫曲行為的影響。同時，非線性的接觸元素被用來模擬脫層的地方。分析的結果與從已發表的實驗結果比較非常地吻合，故此法可以用來預測脫層複材的挫曲行為。

關鍵字

疊層複合材料 ； 脫層 ； 挫屈 ； 有限元素分析法 ； 接觸元素

並列摘要

The laminate composite structure is easily to lose the bonding between laminas due to the manufacture defect, or impacted by the outside objects .The de-bonding between the plys observed in the laminate composite is called de-Iamination. The resistance capability against the compression force for the laminated composite is going down very much. The raising compression force applied to the delaminated composite structure will cause the buckling phenomena. In this paper, 3-D finite element method is applied to analyze the buckling problems of the delaminated composite. Different delaminated locations and lengths of composite laminate were studied. The nonlinear contact elements at the locations of de-Iamination are applied. The published experimental data were used to check the analytical results. Good agreements were obtained between the finite element analyses and experimental results.

並列關鍵字

The laminate composite ； de-Iamination ； buckling ； finite element analyses ； contact element